Mercury(II) sulfide

EMERGENCY OVERVIEW
Very toxic by inhalation, in contact with skin and if swallowed.
Danger of cumulative effects.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. May be fatal if absorbed through the skin.
Ingestion:
May be fatal if swallowed. May cause irritation of the digestive tract. May cause central nervous system effects.
Inhalation:
May be fatal if inhaled. May cause respiratory tract irritation.
Chronic:
May cause kidney injury. Chronic exposure to mercury may cause permanent central nervous system damage, fatigue, weight loss, tremors, personality changes.

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Section 4 - FIRST AID MEASURES
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
Inhalation:
Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Notes to Physician:
Antidote: The use of Dimercaprol or BAL (British Anti-Lewisite) as a chelating agent should be determined by qualified medical personnel.

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Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.

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Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Wash area with soap and water. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.

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Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Minimize dust generation and accumulation. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Storage:
Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Poison room locked.

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Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 1344-48-5: United States OSHA: 0.1 mg/m3 Ceiling (listed under Mercury, ary and inorganic compounds).
Belgium - TWA: (listed as mercury inorganic compounds): 0.025 mg/ VLE (as Hg) France - VME: (listed as mercury inorganic compounds): 0.1 mg/m3 (as Hg) Germany: (listed as mercury inorganic compounds): 0.1 mg/m3 VME ( Hg) Germany: (listed as mercury inorganic compounds): Skin absorber Malaysia: (listed as mercury, aryl and inorganic compounds): 0.1 mg/m3 TWA (as Hg) Netherlands: (listed as mercury inorganic compounds): 0.15 mg/m3 Netherlands: (listed as mercury inorganic compounds): 0.05 mg/m3 Russia: (listed as mercury inorganic compounds): 0.2 mg/m3 TWA (a Hg) Russia: (listed as mercury inorganic compounds): 0.05 mg/m3 STEL Hg) Spain: (listed as mercury inorganic compounds): 0.025 mg/m3 VLA-E (as Hg) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

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Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Powder
Color: bright red - red
Odor: none reported
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 583.5 deg C subl
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Insoluble.
Specific Gravity/Density: 8.1000g/cm3
Molecular Formula: HgS
Molecular Weight: 232.65

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Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
May decompose when exposed to light.
Conditions to Avoid:
Light, dust generation, temperatures above 250C.
Incompatibilities with Other Materials:
Strong oxidizing agents, acids.
Hazardous Decomposition Products:
Oxides of sulfur, mercury/mercury oxides.
Hazardous Polymerization: Has not been reported

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Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 1344-48-5: OX0720000 LD50/LC50:
Not available.
Carcinogenicity:
Mercury(II) sulfide, red - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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Section 12 - ECOLOGICAL INFORMATION

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Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

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Section 14 - TRANSPORT INFORMATION

IATA
Shipping Name: MERCURY COMPOUND, SOLID, N.O.S.
Hazard Class: 6.1
UN Number: 2025
Packing Group: III
IMO
Shipping Name: MERCURY COMPOUND, SOLID, N.O.S.
Hazard Class: 6.1
UN Number: 2025
Packing Group: III
RID/ADR
Shipping Name: MERCURY COMPOUND, SOLID, N.O.S.
Hazard Class: 6.1
UN Number: 2025
Packing group: III

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Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+
Risk Phrases:
R 26/27/28 Very toxic by inhalation, in contact with
skin and if swallowed.
R 33 Danger of cumulative effects.
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
WGK (Water Danger/Protection)
CAS# 1344-48-5: No information available.
Canada
CAS# 1344-48-5 is listed on Canada's DSL List.
CAS# 1344-48-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 1344-48-5 is listed on the TSCA inventory.

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SECTION 16 - ADDITIONAL INFORMATION
N/A

MOLECULAR FORMULA :

Hg-S

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

195 mg/kg/4W-I

TOXIC EFFECTS :

Endocrine - evidence of thyroid hypofunction

REFERENCE :

BECTA6 Bulletin of Environmental Contamination and Toxicology. (Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ 07094) V.1- 1966- Volume(issue)/page/year: 49,847,1992 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M1643 No. of Facilities: 13 (estimated) No. of Industries: 2 No. of Occupations: 3 No. of Employees: 98 (estimated)